CERTIFIED FIBRE OPTIC TECHNICIAN
EXAM 2026
In-multimode fiber, the attenuation (reduction
in optical power) of the fiber is _____ at 850 nm
than at 1300 nm. - answer-Higher
Which of the following represents a
singlemode (smaller core size) fiber size? -
answer-9/125 micron
A fiber optic inspection microscope can
increase the danger of high powered light
sources by focusing the light coming out of a
fiber into your eye. True or False? - answer-
True
A fiber optic power meter measures absolute
power in dBM (dB referenced to 1 mw) and,
when used with a light source, can measure
,insertion loss expressed in dB. True or False? -
answer-True
When we say 62.5/125 fiber, what does "62.5"
mean? - answer-core size, the diameter in
microns
When we say 50/125 fiber, what does "125"
mean? - answer-cladding size, the diameter in
microns
OM3 and OM4 multimode fiber with a 50/125
micron core are now a popular option in
premises cabling systems because they _____.
- answer-Are "laser optimized" which gives
more distance capability with gigabit networks
using laser sources
Singlemode fiber has _____ bandwidth than
multimode fiber. - answer-greater
, Most plastic optical fibers are _____. - answer-
large core step-index
When you strip singlemode or graded index
multimode mode glass fiber, you are removing
the ____. - answer-Primary buffer coating
The proper method of pulling optical fiber
cables is to attach the pull wire or tape to the
____ of the cable. - answer-Strength members
According to the references, hybrid cables are
cables that contain ____. - answer-Both
singelmode and multimode optical fibers
What type of fiber cable design allows for large
numbers of fibers with ultra-high density,
small size (diameter) and lower cost? -
answer-ribbon
EXAM 2026
In-multimode fiber, the attenuation (reduction
in optical power) of the fiber is _____ at 850 nm
than at 1300 nm. - answer-Higher
Which of the following represents a
singlemode (smaller core size) fiber size? -
answer-9/125 micron
A fiber optic inspection microscope can
increase the danger of high powered light
sources by focusing the light coming out of a
fiber into your eye. True or False? - answer-
True
A fiber optic power meter measures absolute
power in dBM (dB referenced to 1 mw) and,
when used with a light source, can measure
,insertion loss expressed in dB. True or False? -
answer-True
When we say 62.5/125 fiber, what does "62.5"
mean? - answer-core size, the diameter in
microns
When we say 50/125 fiber, what does "125"
mean? - answer-cladding size, the diameter in
microns
OM3 and OM4 multimode fiber with a 50/125
micron core are now a popular option in
premises cabling systems because they _____.
- answer-Are "laser optimized" which gives
more distance capability with gigabit networks
using laser sources
Singlemode fiber has _____ bandwidth than
multimode fiber. - answer-greater
, Most plastic optical fibers are _____. - answer-
large core step-index
When you strip singlemode or graded index
multimode mode glass fiber, you are removing
the ____. - answer-Primary buffer coating
The proper method of pulling optical fiber
cables is to attach the pull wire or tape to the
____ of the cable. - answer-Strength members
According to the references, hybrid cables are
cables that contain ____. - answer-Both
singelmode and multimode optical fibers
What type of fiber cable design allows for large
numbers of fibers with ultra-high density,
small size (diameter) and lower cost? -
answer-ribbon
